How many different triangles can you draw on the dotty grid which each have one dot in the middle?
My dice has inky marks on each face. Can you find the route it has taken? What does each face look like?
Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?
How many different triangles can you make on a circular pegboard that has nine pegs?